Global Mean Sea Level


Data source: Satellite sea level observations. Credit: GSFC/PO.DAAC
Rate of Change
(± 0.4) mm/yr
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This dataset contains the Global Mean Sea Level (GMSL) generated from the Integrated Multi-Mission Ocean Altimeter Data for Climate Research (GMSL dataset). The GMSL is a 1-dimensional time series of globally averaged Sea Surface Height Anomalies (SSHA) from TOPEX/Poseidon, Jason-1, OSTM/Jason-2 and Jason-3. It starts in September 1992 to present, with a lag of up to 4 months. Data are reported as changes relative to January 1, 1993 and are 2-month averages. All biases and cross-calibrations have been applied to the data so SSHA are consistent between satellites. Glacial Isostatic Adjustment (GIA) has been applied. These data are available in ASCII format. Reference: Beckley et al., 2017,

A spatial representation of the patterns of the global trends of the rising seas between 1993 and present is available here. The figure was produced at the Jet Propulsion Laboratory (JPL), California Institute of Technology, under the NASA MEaSUREs program (version JPL 1603)

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